A layer of low clouds creates the dark red line along the lower part of the profile.

一层低空云层在剖面图的下方形成了深红色的线。

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Towards evening, as the sun went down, dark clouds covered the sky, the thunder rolled and the lightning flashed, and the red light glowed on the icebergs as they rocked and tossed on the heaving sea.

不过在黄昏的时分，天上忽然布起了一片乌云。 电闪起来了，雷轰起未了。 黑色的巨浪掀起整片整片的冰块，使它们在血红的雷电中闪着光。

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